/**
 * OmniCard AI (CRMmp) - 用户端离线缓存与断网重放队列单元测试
 * 严格遵循 TDD 测试驱动规范与瑞士国际主义极简原则
 */

describe('Point 41: 移动端弱网离线视觉指示器与断网重放队列 (Offline Queue)', () => {
  let storageMap: Record<string, string>;
  let mod: any;

  beforeEach(() => {
    storageMap = {};

    // 模拟全局 uni-app storage 与网络 API
    (global as any).uni = {
      getStorageSync: jest.fn((key: string) => storageMap[key] || ''),
      setStorageSync: jest.fn((key: string, val: string) => {
        storageMap[key] = String(val);
      }),
      removeStorageSync: jest.fn((key: string) => {
        delete storageMap[key];
      }),
      onNetworkStatusChange: jest.fn(),
    };

    // @ts-ignore
    mod = require('../../../mpuniapp/common/offline-queue.uts');
    mod.clearOfflineQueue();
    mod.setNetworkStatus(true, 'wifi');
  });

  afterEach(() => {
    delete (global as any).uni;
  });

  describe('1. 网络在线/断网状态检测与切换', () => {
    it('默认初始状态应为在线 (isOnline = true)', () => {
      expect(mod.isOnline()).toBe(true);
      const status = mod.getOfflineQueueStatus();
      expect(status.isOnline).toBe(true);
      expect(status.networkType).toBe('wifi');
    });

    it('断网时状态切换为离线并输出正确的国际化横幅文案', () => {
      mod.setNetworkStatus(false, 'none');
      expect(mod.isOnline()).toBe(false);

      const status = mod.getOfflineQueueStatus();
      expect(status.isOnline).toBe(false);
      expect(status.networkType).toBe('none');

      // 中文与英文横幅文案
      const zhBanner = mod.formatOfflineBannerText('zh', 2);
      expect(zhBanner).toContain('网络已断开');
      expect(zhBanner).toContain('2 条暂存待同步');

      const enBanner = mod.formatOfflineBannerText('en', 3);
      expect(enBanner).toContain('Offline');
      expect(enBanner).toContain('3 pending');

      const arBanner = mod.formatOfflineBannerText('ar', 1);
      expect(arBanner).toContain('غير متصل');
    });
  });

  describe('2. 离线动作暂存入队 (enqueueOfflineAction)', () => {
    it('应能正确保存离线留资或轨迹提交动作至本地队列', () => {
      const action = {
        id: 'action-001',
        type: 'LEAD_SUBMIT',
        url: '/card/lead/submit',
        method: 'POST',
        data: { name: 'Faisal Al-Otaibi', email: 'faisal@sauditech.sa' },
        timestamp: Date.now(),
      };

      const count = mod.enqueueOfflineAction(action);
      expect(count).toBe(1);

      const queue = mod.getOfflineQueue();
      expect(queue.length).toBe(1);
      expect(queue[0].id).toBe('action-001');
      expect(queue[0].type).toBe('LEAD_SUBMIT');
      expect(queue[0].retryCount).toBe(0);
    });

    it('支持多次入队并保持先进先出 (FIFO) 顺序', () => {
      mod.enqueueOfflineAction({
        id: 'act-1',
        type: 'RADAR_TRACK',
        url: '/crm/radar/track',
        timestamp: 1000,
      });
      mod.enqueueOfflineAction({
        id: 'act-2',
        type: 'LEAD_SUBMIT',
        url: '/crm/lead/create',
        timestamp: 2000,
      });

      const queue = mod.getOfflineQueue();
      expect(queue.length).toBe(2);
      expect(queue[0].id).toBe('act-1');
      expect(queue[1].id).toBe('act-2');
    });

    it('自动生成缺失的 action.id 与 timestamp', () => {
      mod.enqueueOfflineAction({
        type: 'RADAR_TRACK',
        url: '/crm/radar/ping',
      });

      const queue = mod.getOfflineQueue();
      expect(queue.length).toBe(1);
      expect(queue[0].id).toBeDefined();
      expect(queue[0].id.length).toBeGreaterThan(0);
      expect(queue[0].timestamp).toBeGreaterThan(0);
    });
  });

  describe('3. 网络恢复自动重放队列 (replayOfflineQueue)', () => {
    it('成功执行所有队列动作后应自动清空队列', async () => {
      mod.enqueueOfflineAction({
        id: 'act-success-1',
        type: 'LEAD_SUBMIT',
        url: '/card/lead/submit',
        data: { test: 1 },
      });
      mod.enqueueOfflineAction({
        id: 'act-success-2',
        type: 'RADAR_TRACK',
        url: '/crm/radar/track',
        data: { test: 2 },
      });

      expect(mod.getOfflineQueue().length).toBe(2);

      const executedIds: string[] = [];
      const result = await mod.replayOfflineQueue(async (item: any) => {
        executedIds.push(item.id);
        return true;
      });

      expect(result.total).toBe(2);
      expect(result.success).toBe(2);
      expect(result.failed).toBe(0);
      expect(executedIds).toEqual(['act-success-1', 'act-success-2']);
      expect(mod.getOfflineQueue().length).toBe(0);
    });

    it('重放部分失败时应增加重试次数并保留失败项在队列中', async () => {
      mod.enqueueOfflineAction({
        id: 'act-ok',
        type: 'LEAD_SUBMIT',
        url: '/api/ok',
      });
      mod.enqueueOfflineAction({
        id: 'act-fail',
        type: 'LEAD_SUBMIT',
        url: '/api/fail',
      });

      const result = await mod.replayOfflineQueue(async (item: any) => {
        if (item.id === 'act-fail') {
          return false;
        }
        return true;
      });

      expect(result.total).toBe(2);
      expect(result.success).toBe(1);
      expect(result.failed).toBe(1);

      const remaining = mod.getOfflineQueue();
      expect(remaining.length).toBe(1);
      expect(remaining[0].id).toBe('act-fail');
      expect(remaining[0].retryCount).toBe(1);
    });

    it('超过最大重试次数 (默认 3 次) 时应安全移除死信项，避免永久阻塞', async () => {
      mod.enqueueOfflineAction({
        id: 'act-dead',
        type: 'DEAD_LETTER',
        url: '/api/dead',
        retryCount: 3, // 已达上限
      });

      const result = await mod.replayOfflineQueue(async () => false, 3);
      expect(result.total).toBe(1);
      expect(result.failed).toBe(1);
      expect(mod.getOfflineQueue().length).toBe(0); // 超限后被淘汰
    });
  });
});